Error code reference

Samsung Air Conditioner Error Code E456

Outdoor fan over-voltage error - fan motor current exceeds 7A for 1 minute.

SourceSamsung Air Conditioner - Service Manual: PCB Setup & Troubleshooting (ND022LHXEA)p. 4-28, 4-93

Samsung codes Samsung air conditioner codes

Diagnostic procedure

The full E456 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Check motor connection line; check if motor operates well; check if fan is locked.

SourceSamsung Air Conditioner - Service Manual: PCB Setup & Troubleshooting (ND022LHXEA)p. 4-28, 4-93

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More steps, wiring diagram references, and verified part numbers

Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.

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Where this code is documented

4 manuals in the MyPros+ library document this code for Samsung air conditioner.

Models covered by the manuals that document this code

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The full E456 procedure

Where this code is documented

Models covered by the manuals that document this code

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